iOS 进度条，可选择环形或者直线，有无动画

自己写的一个环形进度条，可以已圆或者直线的形式展示，有无动画，编写简洁，注释明确，不愿意读码的同学可以直接创建一个类,copy .h .m即可。

.h

#define SELECKED_COLOR [UIColor colorWithRed:2/255.0 green:126/255.0 blue:198/255.0
alpha:1]

#import <UIKit/UIKit.h>

@interface WYSegmentControl :
UIControl

// UIControl 继承与UIView 
@property(nonatomic,assign)
NSInteger selectedIndex;

-(id)initWithItems:(NSArray*)items WithNormalImage:(UIImage*)normalImage WithSelectImage:(UIImage*)selectImage WithFrame:(CGRect)rect
hideScrollImg:(BOOL)isHide;

-(void)setSegmentHeight:(CGFloat)height;

-(void)SetSelectedSegmentIndex:(NSInteger)index;

/**
 *  设置按钮title
 *
 *  @param title title
 *  @param index
索引
 */
- (void)setSelectedSegmentTitle:(NSString *)title Index:(NSInteger)index;

@end

.m

#import "WYSegmentControl.h"

@interface
WYSegmentControl()
{
    UIView *_v_scroll;
// 滚动视图
    CGFloat _width_scroll;
// 滚动视图宽度
    CGFloat _height_scroll;
    UIScrollView *_bgScrollView;
// 背景滑动视图
    NSMutableArray *_arr_items;
// 按钮
    
    UIImage *_normalImage;
    UIImage *_selectImage;
    CGFloat _btnWidth;
// 按钮宽度
    BOOL _isHideScrollView;
// 是否隐藏滑动条
    
}
@property(nonatomic,assign)
CGFloat segheight;

@end

@implementation WYSegmentControl

-(id)initWithItems:(NSArray*)items WithNormalImage:(UIImage*)normalImage WithSelectImage:(UIImage*)selectImage WithFrame:(CGRect)rect
hideScrollImg:(BOOL)isHide{
    
    if (self = [super
initWithFrame:rect]) {
        
        
        _isHideScrollView = isHide;
        
        _normalImage = normalImage;
        _selectImage = selectImage;
        _btnWidth =
self.frame.size.width /
4;
        
        if (items.count <=
3) {
            
            _btnWidth = rect.size.width / items.count;
        }
        
        //
按钮items
        [self
setItems:items];
    }
    
    return
self;
}
- (void)setSelectedSegmentTitle:(NSString *)title Index:(NSInteger)index
{
    for (UIButton* btn
in _arr_items) {
        
        if (btn.tag == index){
            [btn
setTitle:title forState:UIControlStateNormal];
        }
    }
}
- (void)setItems:(NSArray *)array
{
    for (UIView *subView
in [self subviews]) {
        
        [subView removeFromSuperview];
    }
    
    NSInteger count = [array
count];
    CGFloat width_singe =
_btnWidth;
    CGFloat height =
40.0f;
    
    //
背景scrollView
    _bgScrollView = [[UIScrollView
alloc] initWithFrame:CGRectMake(0,
0, self.frame.size.width
, 40)];
    _bgScrollView.showsHorizontalScrollIndicator =
NO;
    _bgScrollView.contentSize =
CGSizeMake(count * width_singe, 40);
    [self
addSubview:_bgScrollView];
    
    _arr_items = [NSMutableArray
array];
    [_arr_items
removeAllObjects];
    for (
int i = 0; i< count; i++) {
        
        UIButton* btn = [[UIButton
alloc] initWithFrame:CGRectMake(width_singe * i,
0, width_singe, height)];
        btn.tag = i;
        [btn setBackgroundImage:_normalImage
forState:UIControlStateNormal];
        [btn setBackgroundImage:_selectImage
forState:UIControlStateHighlighted];
        [btn setBackgroundImage:_selectImage
forState:UIControlStateSelected];
        btn.titleLabel.font = [UIFont
systemFontOfSize:14];
        [btn setTitle:[array
objectAtIndex:i] forState:UIControlStateNormal];
        [btn setTitleColor:[UIColor
grayColor] forState:UIControlStateNormal];
        [btn setTitleColor:[UIColor
blackColor] forState:UIControlStateHighlighted];
        [btn setTitleColor:[UIColor
blackColor] forState:UIControlStateSelected];
        [btn addTarget:self
action:@selector(changeShow:)
forControlEvents:UIControlEventTouchUpInside];
        [_bgScrollView
addSubview:btn];
        [_arr_items
addObject:btn];
    }
    _width_scroll = width_singe;
    

  
    if (!_isHideScrollView) {
        
        // 滑动条
        CGFloat v_height =
2;
        _height_scroll = v_height;
        _v_scroll = [[UIView
alloc] initWithFrame:CGRectMake(0,
40 - v_height, width_singe, v_height)];
        [_bgScrollView
addSubview:_v_scroll];
        UIView *line = [[UIView
alloc] initWithFrame:CGRectMake(0,
0, width_singe, v_height)];
            
            line.backgroundColor = [UIColor
redColor];
        [_v_scroll
addSubview:line];
    } else {
        
        // 竖线
        NSInteger num =
_arr_items.count;
        for (
int i = 0 ; i< num - 1; i++) {
            UILabel * lab_line = [[UILabel
alloc] initWithFrame:CGRectMake(self.frame.size.width/num + (self.frame.size.width/num)*i,0,0.5,40)];
            lab_line.backgroundColor = [UIColor
lightGrayColor];
            [self
addSubview:lab_line];
        }
    
    }
    //
横线
    UILabel * lab_line = [[UILabel
alloc] initWithFrame:CGRectMake(0,39.5,self.frame.size.width,0.5)];
    lab_line.backgroundColor = [UIColor
lightGrayColor];
    [self
addSubview:lab_line];
    [self
bringSubviewToFront:lab_line];
    
}
// 重新设置每一个控件的高度
-(void)setSegmentHeight:(CGFloat)height{
    
    CGFloat width_singe =
_btnWidth;
    for (UIButton* btn
in _arr_items) {
        NSInteger tag = btn.tag;
        btn.frame =
CGRectMake(width_singe*tag,0, width_singe, height);
    }
}

// 设置某一个被选中
-(void)SetSelectedSegmentIndex:(NSInteger)index{
    
    for (UIButton* btn
in _arr_items) {
        
        if (btn.tag == index){
            btn.selected =
YES;
            _selectedIndex = index;
            
        }else{
            btn.selected =
NO;
        }
    }
}
// 被点击时 
-(void)changeShow:(id)sender{
    
    UIButton* btn = sender;
    _selectedIndex = btn.tag;
        
    if (btn) {
        [self
startAnimation:btn animated:NO];
    }
    
    for (UIButton* btn
in _arr_items) {
        btn.selected =
NO;
    }
    
    btn.selected =
YES;
    
    [self
sendActionsForControlEvents:UIControlEventValueChanged];
}

- (void)startAnimation:(UIButton *)btn animated:(BOOL)animated
{
    if (animated) {
        
        __weak
UIButton *weakBtn = btn;
        __weak
UIView *weakSview = _v_scroll;
        [UIView
animateWithDuration:0.2
animations:^{
            weakBtn.transform =
CGAffineTransformMakeScale(0.5,
0.5);
            [weakSview
setFrame:CGRectMake(_selectedIndex *
_width_scroll, 40 -
_height_scroll, _width_scroll,
_height_scroll)];
            
        } completion:^(BOOL finished) {
            
            [UIView
animateWithDuration:0.25
animations:^{
                
                weakBtn.transform =
CGAffineTransformMakeScale(1.2,
1.2);
                
            } completion:^(BOOL finished) {
                
                weakBtn.transform =
CGAffineTransformMakeScale(1,
1);
            }];
        }];
    } else {
        
        [_v_scroll
setFrame:CGRectMake(_selectedIndex *
_width_scroll, 40 -
_height_scroll, _width_scroll,
_height_scroll)];
        
    }
}
@end

编写仓促，有问题的地方可以留言，望共同进度